Maintenance And Repair; 10. Troubleshooting; 10.1. Faults - Wilo Actun OPTI-MS Série Notice De Montage Et De Mise En Service

MAINTENANCE AND REPAIR

9. Maintenance and repair
Any repairs to the motor or replacement of the motor filling must be carried out by Wilo
customer service only.

10. Troubleshooting

In order to prevent damage or serious injury when repairing malfunctions on the unit,
observe the following:
• Attempt to remedy a fault only if you have qualified staff available. This means that
each job must be carried out by qualified personnel. For example, electrical work must
be performed by a trained electrician.
• Always secure the unit against an accidental restart by disconnecting it from the mains.
Take appropriate safety precautions.
• Always have a second person on hand to ensure the unit is switched off in an
emergency.
• Secure moving parts to prevent injury.
• Unsanctioned modifications to the unit are made at the operator's own risk and release
the manufacturer from any warranty obligations.

10.1. Faults

10.1.1. Fault: The unit will not start or only starts after a delay
1. Electricity supply interrupted, short-circuit or earth fault in the connection cable and/or
motor winding
• Have the motor and wires checked by a specialist and replaced if necessary
• Check the error messages on the frequency converter
2. With solar power operation: Solar panels do not generate sufficient power
• Check the alignment of the solar panels and correct if necessary
• Check solar panels for dirt and clean if necessary
• In the event of an insufficient exposure to the sun as a result of the time of day or
3. Fuses, the motor protection switch, and/or monitoring devices were triggered
• Have a specialist inspect the connections and correct them as necessary
• Install and set motor protection switches and miniature circuit breakers according to
• Check that the impeller runs freely. If necessary clean it and ensure it runs freely again
Installation and operating instructions Wilo-Actun OPTI-MS...
cloudy skies, switch over to mains operation or a generator or wait for the weather
conditions to improve
the technical instructions, reset monitoring devices
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